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616915dd | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2000 University of Virginia, | |
4 | ** Massachusetts Institute of Technology | |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
20 | ** For information on lclint: lclint-request@cs.virginia.edu | |
21 | ** To report a bug: lclint-bug@cs.virginia.edu | |
22 | ** For more information: http://lclint.cs.virginia.edu | |
23 | */ | |
24 | /* | |
25 | ** constraintList.c | |
26 | ** | |
27 | ** based on list_template.c | |
28 | ** | |
29 | ** where T has T_equal (or change this) and T_unparse | |
30 | */ | |
31 | ||
32 | # include "lclintMacros.nf" | |
33 | # include "llbasic.h" | |
34 | ||
d46ce6a4 | 35 | |
36 | /*@iter constraintList_elements_private (sef constraintList x, yield constraint el); @*/ | |
37 | # define constraintList_elements_private(x, m_el) \ | |
38 | { int m_ind; constraint *m_elements = &((x)->elements[0]); \ | |
39 | for (m_ind = 0 ; m_ind < (x)->nelements; m_ind++) \ | |
40 | { constraint m_el = *(m_elements++); | |
41 | ||
42 | # define end_constraintList_elements_private }} | |
43 | ||
44 | ||
c3e695ff | 45 | constraintList constraintList_makeNew () |
616915dd | 46 | { |
47 | constraintList s = (constraintList) dmalloc (sizeof (*s)); | |
48 | ||
49 | s->nelements = 0; | |
50 | s->nspace = constraintListBASESIZE; | |
51 | s->elements = (constraint *) | |
52 | dmalloc (sizeof (*s->elements) * constraintListBASESIZE); | |
53 | ||
54 | return (s); | |
55 | } | |
56 | ||
57 | static void | |
58 | constraintList_grow (constraintList s) | |
59 | { | |
60 | int i; | |
61 | constraint *newelements; | |
62 | ||
63 | s->nspace += constraintListBASESIZE; | |
64 | newelements = (constraint *) dmalloc (sizeof (*newelements) | |
65 | * (s->nelements + s->nspace)); | |
66 | ||
67 | for (i = 0; i < s->nelements; i++) | |
68 | { | |
69 | newelements[i] = s->elements[i]; | |
70 | } | |
71 | ||
72 | sfree (s->elements); | |
73 | s->elements = newelements; | |
74 | } | |
75 | ||
c3e695ff | 76 | |
616915dd | 77 | constraintList |
bb25bea6 | 78 | constraintList_add (/*@returned@*/ constraintList s, /*@only@*/ constraint el) |
616915dd | 79 | { |
c3e695ff | 80 | /*drl7x */ |
81 | // el = constraint_simplify (el); | |
616915dd | 82 | if (resolve (el, s) ) |
d46ce6a4 | 83 | { |
84 | constraint_free (el); | |
85 | return s; | |
86 | } | |
616915dd | 87 | |
88 | if (s->nspace <= 0) | |
89 | constraintList_grow (s); | |
90 | ||
91 | s->nspace--; | |
92 | s->elements[s->nelements] = el; | |
93 | s->nelements++; | |
94 | return s; | |
95 | } | |
96 | ||
d46ce6a4 | 97 | /* frees everything but actual constraints */ |
98 | /* This function should only be used if you have | |
99 | other references to unshared constraints | |
100 | */ | |
101 | static void constraintList_freeShallow (/*@only@*/ constraintList c) | |
102 | { | |
103 | if (constraintList_isDefined(c) ) | |
bb25bea6 | 104 | { |
105 | free (c->elements); | |
106 | c->elements = NULL; | |
107 | c->nelements = -1; | |
108 | c->nspace = -1; | |
109 | } | |
d46ce6a4 | 110 | free (c); |
bb25bea6 | 111 | c = NULL; |
112 | } | |
113 | ||
114 | /*@only@*/ constraintList constraintList_addList (/*@returned@*/ constraintList s, /*@observer@*/ constraintList new) | |
115 | { | |
116 | llassert(constraintList_isDefined(s) ); | |
117 | llassert(constraintList_isDefined(new) ); | |
118 | ||
119 | if (new == constraintList_undefined) | |
120 | return s; | |
121 | ||
122 | constraintList_elements (new, elem) | |
123 | { | |
124 | s = constraintList_add (s, constraint_copy(elem) ); | |
125 | } | |
126 | end_constraintList_elements; | |
127 | ||
128 | return s; | |
d46ce6a4 | 129 | } |
130 | ||
bb25bea6 | 131 | /*@only@*/ constraintList constraintList_addListFree (/*@only@*/ constraintList s, /*@only@*/ constraintList new) |
616915dd | 132 | { |
84c9ffbf | 133 | llassert(constraintList_isDefined(s) ); |
134 | llassert(constraintList_isDefined(new) ); | |
616915dd | 135 | |
136 | if (new == constraintList_undefined) | |
137 | return s; | |
138 | ||
d46ce6a4 | 139 | constraintList_elements_private(new, elem) |
616915dd | 140 | { |
141 | s = constraintList_add (s, elem); | |
142 | } | |
d46ce6a4 | 143 | end_constraintList_elements_private |
144 | ||
145 | constraintList_freeShallow(new); | |
616915dd | 146 | return s; |
147 | } | |
148 | ||
149 | cstring | |
150 | constraintList_print (constraintList s) /*@*/ | |
151 | { | |
152 | int i; | |
153 | cstring st = cstring_undefined; | |
154 | bool first = TRUE; | |
155 | ||
156 | if (s->nelements == 0) | |
d46ce6a4 | 157 | { |
158 | st = cstring_makeLiteral("<List Empty>"); | |
159 | return st; | |
160 | } | |
161 | ||
616915dd | 162 | for (i = 0; i < s->nelements; i++) |
163 | { | |
164 | cstring type = cstring_undefined; | |
165 | constraint current = s->elements[i]; | |
166 | ||
167 | if (current != NULL) | |
168 | { | |
90bc41f7 | 169 | cstring temp1; |
170 | if ( context_getFlag (FLG_ORCONSTRAINT) ) | |
171 | temp1 = constraint_printOr(current); | |
172 | else | |
173 | temp1 = constraint_print(current); | |
616915dd | 174 | type = message ("%q %q\n", type, temp1 ); |
175 | } | |
176 | ||
177 | if (first) | |
178 | { | |
179 | st = type; | |
180 | first = FALSE; | |
181 | } | |
182 | else | |
183 | { | |
184 | st = message ("%q, %q", st, type); | |
185 | } | |
d46ce6a4 | 186 | } //end for |
187 | ||
616915dd | 188 | return st; |
189 | } | |
190 | ||
8f299805 | 191 | void constraintList_printErrorPostConditions (constraintList s, fileloc loc) |
192 | { | |
193 | ||
194 | constraintList_elements (s, elem) | |
195 | { | |
196 | if (elem != NULL) | |
197 | { | |
198 | constraint_printErrorPostCondition (elem, loc); | |
199 | } | |
200 | } | |
201 | end_constraintList_elements; | |
202 | return; | |
203 | } | |
204 | ||
616915dd | 205 | void constraintList_printError (constraintList s, fileloc loc) |
206 | { | |
207 | ||
bb25bea6 | 208 | constraintList_elements (s, elem) |
616915dd | 209 | { |
210 | if (elem != NULL) | |
211 | { | |
212 | constraint_printError (elem, loc); | |
213 | } | |
214 | } | |
bb25bea6 | 215 | end_constraintList_elements; |
616915dd | 216 | return; |
217 | } | |
218 | ||
8f299805 | 219 | |
616915dd | 220 | cstring |
221 | constraintList_printDetailed (constraintList s) | |
222 | { | |
223 | int i; | |
224 | cstring st = cstring_undefined; | |
225 | bool first = TRUE; | |
226 | ||
227 | if (s->nelements == 0) | |
d46ce6a4 | 228 | { |
229 | st = cstring_makeLiteral("<List Empty>"); | |
230 | return st; | |
231 | } | |
232 | ||
616915dd | 233 | for (i = 0; i < s->nelements; i++) |
234 | { | |
235 | cstring type = cstring_undefined; | |
236 | constraint current = s->elements[i]; | |
237 | ||
238 | if (current != NULL) | |
239 | { | |
240 | cstring temp1 = constraint_printDetailed (current); | |
241 | type = message ("%s %s\n", type, temp1 ); | |
d46ce6a4 | 242 | cstring_free(temp1); |
616915dd | 243 | } |
244 | ||
245 | if (first) | |
246 | { | |
247 | st = type; | |
248 | first = FALSE; | |
249 | } | |
250 | else | |
251 | { | |
252 | st = message ("%s %s", st, type); | |
253 | } | |
254 | } | |
255 | return st; | |
256 | } | |
257 | ||
258 | /*{ x: constraint | (x in l1 -> resolve (x, l2) || (x in l2 -> resolve (x, l1) | |
259 | } */ | |
260 | ||
261 | constraintList | |
bb25bea6 | 262 | constraintList_logicalOr (/*@observer@*/ constraintList l1, /*@observer@*/ constraintList l2) |
616915dd | 263 | { |
264 | constraint temp; | |
265 | constraintList ret; | |
bb25bea6 | 266 | DPRINTF ( (message ("Logical or on %s and %s", |
616915dd | 267 | constraintList_print(l1), |
268 | constraintList_print(l2)) ) ); | |
269 | ||
c3e695ff | 270 | ret = constraintList_makeNew(); |
bb25bea6 | 271 | constraintList_elements (l1, el) |
616915dd | 272 | { |
273 | temp = substitute (el, l2); | |
274 | ||
275 | if (resolve (el, l2) || resolve(temp,l2) ) | |
276 | { /*avoid redundant constraints*/ | |
277 | if (!resolve (el, ret) ) | |
bb25bea6 | 278 | { |
279 | constraint temp2; | |
280 | temp2 = constraint_copy(el); | |
281 | ret = constraintList_add (ret, temp2); | |
282 | } | |
616915dd | 283 | } |
d46ce6a4 | 284 | constraint_free(temp); |
616915dd | 285 | } |
bb25bea6 | 286 | end_constraintList_elements; |
616915dd | 287 | |
bb25bea6 | 288 | constraintList_elements (l2, el) |
616915dd | 289 | { |
290 | temp = substitute (el, l1); | |
291 | ||
292 | if (resolve (el, l1) || resolve(temp,l1) ) | |
293 | { | |
294 | /*avoid redundant constraints*/ | |
295 | if (!resolve (el, ret) ) | |
bb25bea6 | 296 | { |
297 | constraint temp2; | |
298 | temp2 = constraint_copy(el); | |
299 | ret = constraintList_add (ret, temp2); | |
300 | } | |
616915dd | 301 | } |
d46ce6a4 | 302 | constraint_free(temp); |
616915dd | 303 | } |
bb25bea6 | 304 | end_constraintList_elements; |
616915dd | 305 | |
306 | ||
307 | return ret; | |
308 | } | |
309 | ||
310 | void | |
bb25bea6 | 311 | constraintList_free (/*@only@*/ constraintList s) |
616915dd | 312 | { |
313 | int i; | |
bb25bea6 | 314 | |
315 | llassert(constraintList_isDefined(s) ); | |
316 | ||
317 | ||
616915dd | 318 | for (i = 0; i < s->nelements; i++) |
319 | { | |
bb25bea6 | 320 | constraint_free (s->elements[i]); |
616915dd | 321 | } |
322 | ||
323 | sfree (s->elements); | |
bb25bea6 | 324 | s->elements = NULL; |
325 | s->nelements = -1; | |
326 | s->nspace = -1; | |
616915dd | 327 | sfree (s); |
bb25bea6 | 328 | s = NULL; |
616915dd | 329 | } |
330 | ||
331 | constraintList | |
332 | constraintList_copy (constraintList s) | |
333 | { | |
c3e695ff | 334 | constraintList ret = constraintList_makeNew (); |
616915dd | 335 | |
bb25bea6 | 336 | constraintList_elements (s, el) |
616915dd | 337 | { |
338 | ret = constraintList_add (ret, constraint_copy (el)); | |
bb25bea6 | 339 | } end_constraintList_elements; |
616915dd | 340 | |
341 | return ret; | |
342 | } | |
343 | ||
344 | constraintList constraintList_preserveOrig (constraintList c) | |
345 | { | |
d46ce6a4 | 346 | DPRINTF((message("constraintList_preserveOrig preserving the originial constraints for %s ", constraintList_print (c) ) )); |
347 | ||
348 | constraintList_elements_private (c, el) | |
616915dd | 349 | { |
350 | el = constraint_preserveOrig (el); | |
351 | } | |
d46ce6a4 | 352 | end_constraintList_elements_private; |
616915dd | 353 | return c; |
354 | } | |
355 | ||
4ab867d6 | 356 | constraintList constraintList_preserveCallInfo (/*@returned@*/ constraintList c, exprNode fcn) |
357 | { | |
358 | DPRINTF((message("constraintList_preserveOrig preserving the originial constraints for %s ", constraintList_print (c) ) )); | |
359 | ||
360 | constraintList_elements_private (c, el) | |
361 | { | |
362 | // el = constraint_preserveOrig (el); | |
363 | el = constraint_setFcnPre(el); | |
364 | el = constraint_origAddGeneratingExpr (el, fcn); | |
365 | } | |
366 | end_constraintList_elements_private; | |
367 | return c; | |
368 | } | |
369 | ||
370 | ||
371 | ||
9280addf | 372 | constraintList constraintList_addGeneratingExpr (constraintList c, exprNode e) |
373 | { | |
374 | DPRINTF ((message ("entering constraintList_addGeneratingExpr for %s ", exprNode_unparse(e) ) )); | |
375 | ||
d46ce6a4 | 376 | constraintList_elements_private (c, el) |
9280addf | 377 | { |
378 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_print(el), exprNode_unparse(e) ) )); | |
379 | el = constraint_addGeneratingExpr (el, e); | |
380 | } | |
d46ce6a4 | 381 | end_constraintList_elements_private; |
9280addf | 382 | return c; |
383 | } | |
384 | ||
d46ce6a4 | 385 | /*@only@*/ constraintList constraintList_doFixResult (/*@only@*/constraintList postconditions, exprNode fcnCall) |
616915dd | 386 | { |
387 | constraintList ret; | |
c3e695ff | 388 | ret = constraintList_makeNew(); |
d46ce6a4 | 389 | constraintList_elements_private (postconditions, el) |
616915dd | 390 | { |
391 | ret = constraintList_add (ret, constraint_doFixResult (el, fcnCall) ); | |
392 | } | |
d46ce6a4 | 393 | end_constraintList_elements_private; |
616915dd | 394 | |
d46ce6a4 | 395 | constraintList_free(postconditions); |
616915dd | 396 | return ret; |
397 | } | |
398 | ||
4ab867d6 | 399 | /*@only@*/ constraintList constraintList_doSRefFixConstraintParam (constraintList preconditions, exprNodeList arglist) |
616915dd | 400 | { |
401 | constraintList ret; | |
c3e695ff | 402 | ret = constraintList_makeNew(); |
616915dd | 403 | |
bb25bea6 | 404 | constraintList_elements (preconditions, el) |
616915dd | 405 | { |
406 | ret = constraintList_add(ret, constraint_doSRefFixConstraintParam (el, arglist) ); | |
407 | } | |
bb25bea6 | 408 | end_constraintList_elements; |
d46ce6a4 | 409 | |
410 | constraintList_free (preconditions); | |
616915dd | 411 | |
412 | return ret; | |
413 | } | |
bb25bea6 | 414 | constraintList constraintList_doSRefFixBaseParam (/*@observer@*/ constraintList preconditions, /*@observer@*/ |
616915dd | 415 | exprNodeList arglist) |
416 | { | |
417 | constraintList ret; | |
bb25bea6 | 418 | constraint temp; |
c3e695ff | 419 | ret = constraintList_makeNew(); |
616915dd | 420 | |
bb25bea6 | 421 | constraintList_elements (preconditions, el) |
616915dd | 422 | { |
bb25bea6 | 423 | temp = constraint_copy(el); |
424 | ret = constraintList_add(ret, constraint_doSRefFixBaseParam (temp, arglist) ); | |
616915dd | 425 | } |
bb25bea6 | 426 | end_constraintList_elements; |
616915dd | 427 | |
428 | return ret; | |
429 | } | |
430 | ||
431 | constraintList constraintList_togglePost (/*@returned@*/ constraintList c) | |
432 | { | |
d46ce6a4 | 433 | constraintList_elements_private (c, el) |
616915dd | 434 | { |
84c9ffbf | 435 | el = constraint_togglePost(el); |
2934b455 | 436 | if (constraint_hasOrig(el) ) |
4ab867d6 | 437 | { |
2934b455 | 438 | el = constraint_togglePostOrig (el); |
4ab867d6 | 439 | } |
616915dd | 440 | } |
d46ce6a4 | 441 | end_constraintList_elements_private; |
616915dd | 442 | return c; |
443 | } | |
444 | ||
445 |